Re: [PATCH] PM / devfreq: Add timer type to devfreq_summary debugfs
From: Chanwoo Choi
Date: Sun Sep 13 2020 - 20:03:27 EST
On 9/8/20 8:08 PM, Chanwoo Choi wrote:
> The commit 4dc3bab8687f ("PM / devfreq: Add support delayed timer for
> polling mode") supports the delayed timer but this commit missed
> the adding the timer type to devfreq_summary debugfs node.
> Add the timer type to devfreq_summary debugfs.
>
> Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode")
> Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> ---
> drivers/devfreq/devfreq.c | 11 ++++++++---
> 1 file changed, 8 insertions(+), 3 deletions(-)
>
> Example after adding 'timer' information to debugfs_summary debugfs node
> on Odroid-XU3 board as following:
> root@localhost:~# cat /sys/kernel/debug/devfreq/devfreq_summary
> dev parent_dev governor timer polling_ms cur_freq_Hz min_freq_Hz max_freq_Hz
> ------------------------------ ------------------------------ --------------- ---------- ---------- ------------ ------------ ------------
> 10c20000.memory-controller null simple_ondemand delayed 100 825000000 165000000 825000000
> 11800000.gpu null simple_ondemand deferrable 50 420000000 177000000 600000000
> soc:bus_wcore null simple_ondemand deferrable 50 532000000 88700000 532000000
> soc:bus_noc soc:bus_wcore passive null 0 111000000 66600000 111000000
> soc:bus_fsys_apb soc:bus_wcore passive null 0 222000000 111000000 222000000
> soc:bus_fsys2 soc:bus_wcore passive null 0 200000000 75000000 200000000
> soc:bus_mfc soc:bus_wcore passive null 0 333000000 83250000 333000000
> soc:bus_gen soc:bus_wcore passive null 0 266000000 88700000 266000000
> soc:bus_peri soc:bus_wcore passive null 0 66600000 66600000 66600000
> soc:bus_g2d soc:bus_wcore passive null 0 333000000 83250000 333000000
> soc:bus_g2d_acp soc:bus_wcore passive null 0 266000000 66500000 266000000
> soc:bus_jpeg soc:bus_wcore passive null 0 300000000 75000000 300000000
> soc:bus_jpeg_apb soc:bus_wcore passive null 0 166500000 83250000 166500000
> soc:bus_disp1_fimd soc:bus_wcore passive null 0 200000000 120000000 200000000
> soc:bus_disp1 soc:bus_wcore passive null 0 300000000 120000000 300000000
> soc:bus_gscl_scaler soc:bus_wcore passive null 0 300000000 150000000 300000000
> soc:bus_mscl soc:bus_wcore passive null 0 666000000 84000000 666000000
>
>
> diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
> index b9b27fb3291e..d4424b5d8306 100644
> --- a/drivers/devfreq/devfreq.c
> +++ b/drivers/devfreq/devfreq.c
> @@ -1790,20 +1790,23 @@ static int devfreq_summary_show(struct seq_file *s, void *data)
> struct devfreq *p_devfreq = NULL;
> unsigned long cur_freq, min_freq, max_freq;
> unsigned int polling_ms;
> + unsigned int timer;
>
> - seq_printf(s, "%-30s %-30s %-15s %10s %12s %12s %12s\n",
> + seq_printf(s, "%-30s %-30s %-15s %-10s %10s %12s %12s %12s\n",
> "dev",
> "parent_dev",
> "governor",
> + "timer",
> "polling_ms",
> "cur_freq_Hz",
> "min_freq_Hz",
> "max_freq_Hz");
> - seq_printf(s, "%30s %30s %15s %10s %12s %12s %12s\n",
> + seq_printf(s, "%30s %30s %15s %10s %10s %12s %12s %12s\n",
> "------------------------------",
> "------------------------------",
> "---------------",
> "----------",
> + "----------",
> "------------",
> "------------",
> "------------");
> @@ -1827,13 +1830,15 @@ static int devfreq_summary_show(struct seq_file *s, void *data)
> cur_freq = devfreq->previous_freq;
> get_freq_range(devfreq, &min_freq, &max_freq);
> polling_ms = devfreq->profile->polling_ms;
> + timer = devfreq->profile->timer;
> mutex_unlock(&devfreq->lock);
>
> seq_printf(s,
> - "%-30s %-30s %-15s %10d %12ld %12ld %12ld\n",
> + "%-30s %-30s %-15s %-10s %10d %12ld %12ld %12ld\n",
> dev_name(&devfreq->dev),
> p_devfreq ? dev_name(&p_devfreq->dev) : "null",
> devfreq->governor_name,
> + polling_ms ? timer_name[timer] : "null",
> polling_ms,
> cur_freq,
> min_freq,
>
Applied it.
--
Best Regards,
Chanwoo Choi
Samsung Electronics